Cultivo do amendoim submetido a diferentes níveis de adubação e condições edafoclimáticas no sudoeste de Goiás

Abstract

The peanut is the fourth most widely grown oilseed crop in the world, occupying about 22 million hectares. The cultivation of groundnut is a great alternative for family farmers to diversify, because it has multiple uses. However, the southwest of Goiás is not a region traditionally produces peanuts, and little is known about the behavior of this culture in this region. The aim of this study was to evaluate the performance of crop peanuts subjected to increasing levels of phosphorus and potassium in soils with different textures, in two growing seasons (summer harvest and autumn). The experiments were conducted in an Oxisol the clay texture and in an Oxisol medium texture. The peanut cultivar BRS Havana was used in this work. It was shown that doses phosphorus, soil type and planting time have an effect on the factor leaf cover of the peanut crop. The factors of leaf coverage of peanut plants grown in the Oxisol the clay texture were higher than the plants grown in the Oxisol medium texture. In relation to the planting season the biggest factors in coverage was obtained during the summer harvest. The phosphorus significantly influenced the productivity of the crop. The Potassium did not affect the productivity of the crop. The environmental conditions of the summer harvest favor the development of peanut better, in turn, most productive when compared to peanuts grown in autumn. The yield of peanuts grown in the Oxisol the clay texture is greater than the Oxisol medium texture.